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Financial Instruments - Disclosure of changes in financial liabilities - warrants (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Financial Instruments - Warrants [Roll Forward]      
Balance at beginning of period $ 192,808    
Balance at end of period 35,664 $ 192,808  
Level 3 of fair value hierarchy      
Financial Instruments - Warrants [Roll Forward]      
Balance at beginning of period 184,781    
Balance at end of period 29,171 184,781  
Subsidiary warrant liability      
Financial Instruments - Warrants [Roll Forward]      
Balance at beginning of period 6,787    
Balance at end of period 47 6,787  
Subsidiary warrant liability | Level 3 of fair value hierarchy      
Financial Instruments - Warrants [Roll Forward]      
Balance at beginning of period 6,787 8,206 $ 7,997
Value at issuance     92
Change in fair value (6,740) (1,419) 117
Balance at end of period $ 47 $ 6,787 $ 8,206